Glue compound



UNITED STATES PATENT OFFICE.

ROBERT \V. JOHNSON, OF NEYV BRUNS\VICK, NEYV JERSEY.

GLUE COMPOUND.

SPECIFICATION forming part of Letters Patent No. 426,187, dated April 22, 1890. Application filed July 18, 1889- Serial No.317,933. (No specimens.)

T0 aZZ whom it may concern.-

Be it known that I, ROBERT W. JOHNSON, a citizen of the United States, residing at New Brunswick, in the county of Middlesex, State of New Jersey, have invented certain new and useful Improvements in Composition of Matter for Various Purposes, of which the following is a specification.

My invention relates to improvements in minor plastics and the objects of my improvement are to impart to dissolved glue or gelatine a certain amount of elasticity and solubility with firmness or temper very little aifeoted by the various conditions of the atmosphere or its temperature, so as to adaptit to a great many purposes-ms, for example, in the manufacture of printers rolls, corks or stoppers, medical plasters, and pills, in the coating or covering of fabrics, clothing, paper, or othermaterials, in the manufacture of cement, flexible glue, 850.

My composition consists of the following ingredients combined for the grcaternumber of purposes in the following proportions: One part of gelatine and from one to two parts of sulpholeate of sodium, lVhen the compound has two parts of sulpholeate of sodium to one of gelatine or glue, it is rendered more flexible and adhesive and suitable as a base for plasters, or for glue, or the purposes for which glue is used, although it is not entirely hygroseopic.

In said compound. various substances, as

drugs, pigments, and ground barks, can be incorporated to reduce the cost and also to modify its consistence.

My compound above stated is prepared by dissolving the glue or gelatine in the smallest possible amount of water or moisture with heat or steam, to which is added the amount above stated of sulpholeate of soda, or of potash, or of ammonia, and the whole is heated or boiled until the bulk of the moisture used to soften the glue'is driven out and the whole is thoroughly mixed and combined. The consistence is diminished, if desired, by the addition of more sulpholeate of sodium. \Vhen the compound is spread in a thin sheet upon paper or upon fabrics, it may be rendered near- 1y insoluble by dipping it in or treating it with bichromate of potash or chromic acid.

Elements of the above-described compound, combined with glycerine, forms a part of another applieation for patent filed Febrnary27, 1889, Serial No. 30153511.

Vhat I claim, and desire to secure by Letters Patent, is-

The herein-described composition of mat ter, consisting of glue and sulpholeate of soda, (or of pot-ash,) substantially as specified.

In testimony whereof I afiixmy signature in presence of two witnesses.

ROBERT W. JOHNSON.

Witnesses:

J. W. JOHNSON, WM. ll. JOHNSON. 

